As I reported a while back, we are currently using a mobile router TP-Link TL-MR3020 in the camper to create connections to the Internet using external WLANs (for example on camping sites) or mobile networks.

In case of a weak mobile network signal, we can place an external antenna outside the vehicle. As the router does not have a connection option for an external WLAN antenna, we unfortunately cannot use an antenna, but found an unconventional way to solve the issue.

Together with a small Anker Astro E1 5200mAh power bank as power supply, we place the router in a hermetically closed Emsa kitchen plastic box (cost approx. Eur 4 in Germany) and then place it on the roof of the vehicle (using a small anti slip mat when windy). The power bank can supply the router for more than 40 hours with a single charge.

This trick helped us well over the last couple of weeks. This is for sure no highly professional or long term solution, but one that can be composed simply and cheaply, potentially reusing already present components.